#!/usr/bin/env python
#******************************************************************************
#  $Id$
#
#  Name:     gdalcopyproj.py
#  Project:  GDAL Python Interface
#  Purpose:  Duplicate the geotransform and projection metadata from
#            one raster dataset to another, which can be useful after
#            performing image manipulations with other software that
#            ignores or discards georeferencing metadata.
#  Author:   Schuyler Erle, schuyler@nocat.net
#
#******************************************************************************
#  Copyright (c) 2005, Frank Warmerdam
#  Copyright (c) 2009-2011, Even Rouault <even dot rouault at mines-paris dot org>
#
#  Permission is hereby granted, free of charge, to any person obtaining a
#  copy of this software and associated documentation files (the "Software"),
#  to deal in the Software without restriction, including without limitation
#  the rights to use, copy, modify, merge, publish, distribute, sublicense,
#  and/or sell copies of the Software, and to permit persons to whom the
#  Software is furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included
#  in all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
#  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
#  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
#  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
#  DEALINGS IN THE SOFTWARE.
#******************************************************************************

import sys

from osgeo import gdal

def copy_geoinfo(input, output):
    dataset = gdal.Open(input)
    if dataset is None:
        print('Unable to open', input, 'for reading')
        sys.exit(1)

    projection   = dataset.GetProjection()
    geotransform = dataset.GetGeoTransform()

    if projection is None and geotransform is None:
        print('No projection or geotransform found on file' + input)
        sys.exit(1)

    dataset2 = gdal.Open(output, gdal.GA_Update)

    if dataset2 is None:
        print('Unable to open', output, 'for writing')
        sys.exit(1)

    if geotransform is not None and geotransform != (0,1,0,0,0,1):
        dataset2.SetGeoTransform(geotransform)

    if projection is not None and projection != '':
        dataset2.SetProjection(projection)

    gcp_count = dataset.GetGCPs()
    if gcp_count != 0:
        dataset2.SetGCPs(gcp_count, dataset.GetGCPProjection())
